user0/rust
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

fix(rustc): suggest items be borrowed in for i in items[x..]

Browse source 
Fixes #87994
This commit is contained in:
Michael Howell 2021-09-01 20:07:56 -07:00
parent e3c71f1e33
commit 733bdd079a
3 changed files with 57 additions and 4 deletions
Download patch file Download diff file Expand all files Collapse all files

7
src/test/ui/suggestions/slice-issue-87994.rs Normal file
View file

@ -0,0 +1,7 @@
fn main() {
let v = vec![1i32, 2, 3];
for _ in v[1..] {
//~^ ERROR [i32]` is not an iterator [E0277]
//~^^ ERROR known at compilation time
}
}

37
src/test/ui/suggestions/slice-issue-87994.stderr Normal file
View file

@ -0,0 +1,37 @@
error[E0277]: the size for values of type `[i32]` cannot be known at compilation time
--> $DIR/slice-issue-87994.rs:3:12
|
LL | for _ in v[1..] {
| ^^^^^^
| |
| expected an implementor of trait `IntoIterator`
| help: consider borrowing here: `&v[1..]`
|
= note: the trait bound `[i32]: IntoIterator` is not satisfied
= note: required because of the requirements on the impl of `IntoIterator` for `[i32]`
note: required by `into_iter`
--> $SRC_DIR/core/src/iter/traits/collect.rs:LL:COL
|
LL | fn into_iter(self) -> Self::IntoIter;
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
error[E0277]: `[i32]` is not an iterator
--> $DIR/slice-issue-87994.rs:3:12
|
LL | for _ in v[1..] {
| ^^^^^^
| |
| expected an implementor of trait `IntoIterator`
| help: consider borrowing here: `&v[1..]`
|
= note: the trait bound `[i32]: IntoIterator` is not satisfied
= note: required because of the requirements on the impl of `IntoIterator` for `[i32]`
note: required by `into_iter`
--> $SRC_DIR/core/src/iter/traits/collect.rs:LL:COL
|
LL | fn into_iter(self) -> Self::IntoIter;
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
error: aborting due to 2 previous errors
For more information about this error, try `rustc --explain E0277`.